Data/hora: 12/06/2024 04:22:02

Provedor de dados: 	5	
País: 	France	
Título: 	Two-stage opening of the Dover Strait and the origin of island Britain	
Autores: 	Gupta, Sanjeev; Collier, Jenny S.; Garcia-moreno, David; Oggioni, Francesca; Trentesaux, Alain; Vanneste, Kris; De Batist, Marc; Camelbeeck, Thierry; Potter, Graeme; Van Vliet-lanoe, Brigitte; Arthur, John C. R.	
Data: 	2017-04	
Ano: 	2017	
Resumo: 	Late Quaternary separation of Britain from mainland Europe is considered to be a consequence of spillover of a large proglacial lake in the Southern North Sea basin. Lake spillover is inferred to have caused breaching of a rock ridge at the Dover Strait, although this hypothesis remains untested. Here we show that opening of the Strait involved at least two major episodes of erosion. Sub-bottom records reveal a remarkable set of sediment-infilled depressions that are deeply incised into bedrock that we interpret as giant plunge pools. These support a model of initial erosion of the Dover Strait by lake overspill, plunge pool erosion by waterfalls and subsequent dam breaching. Cross-cutting of these landforms by a prominent bedrock-eroded valley that is characterized by features associated with catastrophic flooding indicates final breaching of the Strait by high-magnitude flows. These events set-up conditions for island Britain during sea-level highstands and caused large-scale re-routing of NW European drainage.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00455/56635/58373.pdf

https://archimer.ifremer.fr/doc/00455/56635/58374.pdf

https://archimer.ifremer.fr/doc/00455/56635/58375.pdf

DOI:10.1038/ncomms15101

https://archimer.ifremer.fr/doc/00455/56635/	
Editor: 	Nature Publishing Group	
Formato: 	application/pdf	
Fonte: 	Nature Communications (2041-1723) (Nature Publishing Group), 2017-04 , Vol. 8 , N. 15101 , P. 12p.	
Fonte: 	The Author(s) 2017. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this...

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